What is the full form of MCB ? What is its function ?

MCB stands for Miniature Circuit Breaker. They are safety switches used for protection of appliances and human beings. If the current through a circuit exceeds the safety limits rated by the MCB, it automatically turns off and protects the devices connected to the circuit. MCBs are the replacement for safety fuses which were used in earlier.

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Hi Rushikesh!
Please refer to the answer given by Cute haryau.
@Haryau: Good work!! Keep it up!!

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